build: Remove build files in nested folders

[tylerbutler]

Updates the clean scripts across the repo to delete nested temporary build files. We need this change to properly clean up fluid-build and tsc-multi output, which can be outside the root of the package.

[Josmithr]

Updates the clean scripts across the repo to delete nested temporary build files. We need this change to properly clean up fluid-build and tsc-multi output, which can be outside the root of the package.

Where do the nested temp files end up? Under src? dist? Can we configure this? Just wondering if we can shove all of it under temp/tsc or something, and simplify our clean scripts a bit.

Later, we could also update api-extractor to dump its temp files under temp/api-extractor or something and really simplify things.

[tylerbutler]

Updates the clean scripts across the repo to delete nested temporary build files. We need this change to properly clean up fluid-build and tsc-multi output, which can be outside the root of the package.

Where do the nested temp files end up? Under src? dist? Can we configure this? Just wondering if we can shove all of it under temp/tsc or something, and simplify our clean scripts a bit.

Later, we could also update api-extractor to dump its temp files under temp/api-extractor or something and really simplify things.

The temp files are created by tsc (which is invoked by tsc-multi) and as far as I can tell they are put relative to the tsconfig, so they wind up in src/test.